ICU 71.1 71.1

ubidi.h
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1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 ******************************************************************************
5 *
6 * Copyright (C) 1999-2013, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 ******************************************************************************
10 * file name: ubidi.h
11 * encoding: UTF-8
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 1999jul27
16 * created by: Markus W. Scherer, updated by Matitiahu Allouche
17 */
18
19 #ifndef UBIDI_H
20 #define UBIDI_H
21
22 #include "unicode/utypes.h"
23 #include "unicode/uchar.h"
24
25 #if U_SHOW_CPLUSPLUS_API
26 #include "unicode/localpointer.h"
27 #endif // U_SHOW_CPLUSPLUS_API
28
293 /*DOCXX_TAG*/
340 typedef uint8_t UBiDiLevel;
341
366 #define UBIDI_DEFAULT_LTR 0xfe
367
393 #define UBIDI_DEFAULT_RTL 0xff
394
402 #define UBIDI_MAX_EXPLICIT_LEVEL 125
403
408 #define UBIDI_LEVEL_OVERRIDE 0x80
409
423 #define UBIDI_MAP_NOWHERE (-1)
424
429 enum UBiDiDirection {
441 UBIDI_LTR,
453 UBIDI_RTL,
460 UBIDI_MIXED,
467 UBIDI_NEUTRAL
468 };
469
471 typedef enum UBiDiDirection UBiDiDirection;
472
483 struct UBiDi;
484
486 typedef struct UBiDi UBiDi;
487
503 U_CAPI UBiDi * U_EXPORT2
504 ubidi_open(void);
505
540 U_CAPI UBiDi * U_EXPORT2
541 ubidi_openSized(int32_t maxLength, int32_t maxRunCount, UErrorCode *pErrorCode);
542
563 U_CAPI void U_EXPORT2
564 ubidi_close(UBiDi *pBiDi);
565
566 #if U_SHOW_CPLUSPLUS_API
567
568 U_NAMESPACE_BEGIN
569
579 U_DEFINE_LOCAL_OPEN_POINTER(LocalUBiDiPointer, UBiDi, ubidi_close);
580
581 U_NAMESPACE_END
582
583 #endif
584
633 U_CAPI void U_EXPORT2
634 ubidi_setInverse(UBiDi *pBiDi, UBool isInverse);
635
652 U_CAPI UBool U_EXPORT2
653 ubidi_isInverse(UBiDi *pBiDi);
654
675 U_CAPI void U_EXPORT2
676 ubidi_orderParagraphsLTR(UBiDi *pBiDi, UBool orderParagraphsLTR);
677
689 U_CAPI UBool U_EXPORT2
690 ubidi_isOrderParagraphsLTR(UBiDi *pBiDi);
691
699 typedef enum UBiDiReorderingMode {
703 UBIDI_REORDER_DEFAULT = 0,
707 UBIDI_REORDER_NUMBERS_SPECIAL,
711 UBIDI_REORDER_GROUP_NUMBERS_WITH_R,
719 UBIDI_REORDER_RUNS_ONLY,
724 UBIDI_REORDER_INVERSE_NUMBERS_AS_L,
728 UBIDI_REORDER_INVERSE_LIKE_DIRECT,
732 UBIDI_REORDER_INVERSE_FOR_NUMBERS_SPECIAL,
733 #ifndef U_HIDE_DEPRECATED_API
734
738 UBIDI_REORDER_COUNT
739 #endif // U_HIDE_DEPRECATED_API
740 } UBiDiReorderingMode;
741
893 U_CAPI void U_EXPORT2
894 ubidi_setReorderingMode(UBiDi *pBiDi, UBiDiReorderingMode reorderingMode);
895
904 U_CAPI UBiDiReorderingMode U_EXPORT2
905 ubidi_getReorderingMode(UBiDi *pBiDi);
906
914 typedef enum UBiDiReorderingOption {
921 UBIDI_OPTION_DEFAULT = 0,
922
967 UBIDI_OPTION_INSERT_MARKS = 1,
968
985 UBIDI_OPTION_REMOVE_CONTROLS = 2,
986
1033 UBIDI_OPTION_STREAMING = 4
1034 } UBiDiReorderingOption;
1035
1049 U_CAPI void U_EXPORT2
1050 ubidi_setReorderingOptions(UBiDi *pBiDi, uint32_t reorderingOptions);
1051
1060 U_CAPI uint32_t U_EXPORT2
1061 ubidi_getReorderingOptions(UBiDi *pBiDi);
1062
1147 U_CAPI void U_EXPORT2
1148 ubidi_setContext(UBiDi *pBiDi,
1149 const UChar *prologue, int32_t proLength,
1150 const UChar *epilogue, int32_t epiLength,
1151 UErrorCode *pErrorCode);
1152
1235 U_CAPI void U_EXPORT2
1236 ubidi_setPara(UBiDi *pBiDi, const UChar *text, int32_t length,
1237 UBiDiLevel paraLevel, UBiDiLevel *embeddingLevels,
1238 UErrorCode *pErrorCode);
1239
1286 U_CAPI void U_EXPORT2
1287 ubidi_setLine(const UBiDi *pParaBiDi,
1288 int32_t start, int32_t limit,
1289 UBiDi *pLineBiDi,
1290 UErrorCode *pErrorCode);
1291
1307 U_CAPI UBiDiDirection U_EXPORT2
1308 ubidi_getDirection(const UBiDi *pBiDi);
1309
1337 U_CAPI UBiDiDirection U_EXPORT2
1338 ubidi_getBaseDirection(const UChar *text, int32_t length );
1339
1351 U_CAPI const UChar * U_EXPORT2
1352 ubidi_getText(const UBiDi *pBiDi);
1353
1362 U_CAPI int32_t U_EXPORT2
1363 ubidi_getLength(const UBiDi *pBiDi);
1364
1380 U_CAPI UBiDiLevel U_EXPORT2
1381 ubidi_getParaLevel(const UBiDi *pBiDi);
1382
1391 U_CAPI int32_t U_EXPORT2
1392 ubidi_countParagraphs(UBiDi *pBiDi);
1393
1428 U_CAPI int32_t U_EXPORT2
1429 ubidi_getParagraph(const UBiDi *pBiDi, int32_t charIndex, int32_t *pParaStart,
1430 int32_t *pParaLimit, UBiDiLevel *pParaLevel,
1431 UErrorCode *pErrorCode);
1432
1460 U_CAPI void U_EXPORT2
1461 ubidi_getParagraphByIndex(const UBiDi *pBiDi, int32_t paraIndex,
1462 int32_t *pParaStart, int32_t *pParaLimit,
1463 UBiDiLevel *pParaLevel, UErrorCode *pErrorCode);
1464
1480 U_CAPI UBiDiLevel U_EXPORT2
1481 ubidi_getLevelAt(const UBiDi *pBiDi, int32_t charIndex);
1482
1501 U_CAPI const UBiDiLevel * U_EXPORT2
1502 ubidi_getLevels(UBiDi *pBiDi, UErrorCode *pErrorCode);
1503
1528 U_CAPI void U_EXPORT2
1529 ubidi_getLogicalRun(const UBiDi *pBiDi, int32_t logicalPosition,
1530 int32_t *pLogicalLimit, UBiDiLevel *pLevel);
1531
1547 U_CAPI int32_t U_EXPORT2
1548 ubidi_countRuns(UBiDi *pBiDi, UErrorCode *pErrorCode);
1549
1606 U_CAPI UBiDiDirection U_EXPORT2
1607 ubidi_getVisualRun(UBiDi *pBiDi, int32_t runIndex,
1608 int32_t *pLogicalStart, int32_t *pLength);
1609
1647 U_CAPI int32_t U_EXPORT2
1648 ubidi_getVisualIndex(UBiDi *pBiDi, int32_t logicalIndex, UErrorCode *pErrorCode);
1649
1682 U_CAPI int32_t U_EXPORT2
1683 ubidi_getLogicalIndex(UBiDi *pBiDi, int32_t visualIndex, UErrorCode *pErrorCode);
1684
1725 U_CAPI void U_EXPORT2
1726 ubidi_getLogicalMap(UBiDi *pBiDi, int32_t *indexMap, UErrorCode *pErrorCode);
1727
1761 U_CAPI void U_EXPORT2
1762 ubidi_getVisualMap(UBiDi *pBiDi, int32_t *indexMap, UErrorCode *pErrorCode);
1763
1784 U_CAPI void U_EXPORT2
1785 ubidi_reorderLogical(const UBiDiLevel *levels, int32_t length, int32_t *indexMap);
1786
1807 U_CAPI void U_EXPORT2
1808 ubidi_reorderVisual(const UBiDiLevel *levels, int32_t length, int32_t *indexMap);
1809
1842 U_CAPI void U_EXPORT2
1843 ubidi_invertMap(const int32_t *srcMap, int32_t *destMap, int32_t length);
1844
1854 #define UBIDI_KEEP_BASE_COMBINING 1
1855
1864 #define UBIDI_DO_MIRRORING 2
1865
1878 #define UBIDI_INSERT_LRM_FOR_NUMERIC 4
1879
1891 #define UBIDI_REMOVE_BIDI_CONTROLS 8
1892
1907 #define UBIDI_OUTPUT_REVERSE 16
1908
1947 U_CAPI int32_t U_EXPORT2
1948 ubidi_getProcessedLength(const UBiDi *pBiDi);
1949
1977 U_CAPI int32_t U_EXPORT2
1978 ubidi_getResultLength(const UBiDi *pBiDi);
1979
1980 U_CDECL_BEGIN
1981
1982 #ifndef U_HIDE_DEPRECATED_API
1983
1992 #define U_BIDI_CLASS_DEFAULT U_CHAR_DIRECTION_COUNT
1993 #endif // U_HIDE_DEPRECATED_API
1994
2015 typedef UCharDirection U_CALLCONV
2016 UBiDiClassCallback(const void *context, UChar32 c);
2017
2018 U_CDECL_END
2019
2035 U_CAPI UCharDirection U_EXPORT2
2036 ubidi_getCustomizedClass(UBiDi *pBiDi, UChar32 c);
2037
2065 U_CAPI void U_EXPORT2
2066 ubidi_setClassCallback(UBiDi *pBiDi, UBiDiClassCallback *newFn,
2067 const void *newContext, UBiDiClassCallback **oldFn,
2068 const void **oldContext, UErrorCode *pErrorCode);
2069
2082 U_CAPI void U_EXPORT2
2083 ubidi_getClassCallback(UBiDi *pBiDi, UBiDiClassCallback **fn, const void **context);
2084
2150 U_CAPI int32_t U_EXPORT2
2151 ubidi_writeReordered(UBiDi *pBiDi,
2152 UChar *dest, int32_t destSize,
2153 uint16_t options,
2154 UErrorCode *pErrorCode);
2155
2202 U_CAPI int32_t U_EXPORT2
2203 ubidi_writeReverse(const UChar *src, int32_t srcLength,
2204 UChar *dest, int32_t destSize,
2205 uint16_t options,
2206 UErrorCode *pErrorCode);
2207
2208 /*#define BIDI_SAMPLE_CODE*/
2211 #endif
ubidi_getDirection
U_CAPI UBiDiDirection ubidi_getDirection(const UBiDi *pBiDi)
Get the directionality of the text.
ubidi_getLogicalMap
U_CAPI void ubidi_getLogicalMap(UBiDi *pBiDi, int32_t *indexMap, UErrorCode *pErrorCode)
Get a logical-to-visual index map (array) for the characters in the UBiDi (paragraph or line) object.
UBiDiReorderingOption
UBiDiReorderingOption
UBiDiReorderingOption values indicate which options are specified to affect the Bidi algorithm.
Definition: ubidi.h:914
ubidi_setInverse
U_CAPI void ubidi_setInverse(UBiDi *pBiDi, UBool isInverse)
Modify the operation of the Bidi algorithm such that it approximates an "inverse Bidi" algorithm.
ubidi_setReorderingMode
U_CAPI void ubidi_setReorderingMode(UBiDi *pBiDi, UBiDiReorderingMode reorderingMode)
Modify the operation of the Bidi algorithm such that it implements some variant to the basic Bidi alg...
ubidi_getParagraphByIndex
U_CAPI void ubidi_getParagraphByIndex(const UBiDi *pBiDi, int32_t paraIndex, int32_t *pParaStart, int32_t *pParaLimit, UBiDiLevel *pParaLevel, UErrorCode *pErrorCode)
Get a paragraph, given the index of this paragraph.
ubidi_getVisualMap
U_CAPI void ubidi_getVisualMap(UBiDi *pBiDi, int32_t *indexMap, UErrorCode *pErrorCode)
Get a visual-to-logical index map (array) for the characters in the UBiDi (paragraph or line) object.
UBiDiReorderingMode
UBiDiReorderingMode
UBiDiReorderingMode values indicate which variant of the Bidi algorithm to use.
Definition: ubidi.h:699
ubidi_getLogicalIndex
U_CAPI int32_t ubidi_getLogicalIndex(UBiDi *pBiDi, int32_t visualIndex, UErrorCode *pErrorCode)
Get the logical text position from a visual position.
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
UBiDiLevel
uint8_t UBiDiLevel
UBiDiLevel is the type of the level values in this Bidi implementation.
Definition: ubidi.h:340
ubidi_setLine
U_CAPI void ubidi_setLine(const UBiDi *pParaBiDi, int32_t start, int32_t limit, UBiDi *pLineBiDi, UErrorCode *pErrorCode)
ubidi_setLine() sets a UBiDi to contain the reordering information, especially the resolved levels,...
UBIDI_REORDER_INVERSE_NUMBERS_AS_L
@ UBIDI_REORDER_INVERSE_NUMBERS_AS_L
Visual to Logical algorithm which handles numbers like L (same algorithm as selected by ubidi_setInve...
Definition: ubidi.h:724
ubidi_getReorderingMode
U_CAPI UBiDiReorderingMode ubidi_getReorderingMode(UBiDi *pBiDi)
What is the requested reordering mode for a given Bidi object?
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:269
UBIDI_OPTION_INSERT_MARKS
@ UBIDI_OPTION_INSERT_MARKS
option bit for ubidi_setReorderingOptions: insert Bidi marks (LRM or RLM) when needed to ensure corre...
Definition: ubidi.h:967
U_CALLCONV
#define U_CALLCONV
Definition: platform.h:870
ubidi_setClassCallback
U_CAPI void ubidi_setClassCallback(UBiDi *pBiDi, UBiDiClassCallback *newFn, const void *newContext, UBiDiClassCallback **oldFn, const void **oldContext, UErrorCode *pErrorCode)
Set the callback function and callback data used by the UBA implementation for Bidi class determinati...
ubidi_getParagraph
U_CAPI int32_t ubidi_getParagraph(const UBiDi *pBiDi, int32_t charIndex, int32_t *pParaStart, int32_t *pParaLimit, UBiDiLevel *pParaLevel, UErrorCode *pErrorCode)
Get a paragraph, given a position within the text.
ubidi_getClassCallback
U_CAPI void ubidi_getClassCallback(UBiDi *pBiDi, UBiDiClassCallback **fn, const void **context)
Get the current callback function used for Bidi class determination.
UBIDI_OPTION_DEFAULT
@ UBIDI_OPTION_DEFAULT
option value for ubidi_setReorderingOptions: disable all the options which can be set with this funct...
Definition: ubidi.h:921
UBIDI_REORDER_GROUP_NUMBERS_WITH_R
@ UBIDI_REORDER_GROUP_NUMBERS_WITH_R
Logical to Visual algorithm grouping numbers with adjacent R characters (reversible algorithm).
Definition: ubidi.h:711
UBIDI_NEUTRAL
@ UBIDI_NEUTRAL
No strongly directional text.
Definition: ubidi.h:467
ubidi_reorderLogical
U_CAPI void ubidi_reorderLogical(const UBiDiLevel *levels, int32_t length, int32_t *indexMap)
This is a convenience function that does not use a UBiDi object.
UBIDI_REORDER_INVERSE_FOR_NUMBERS_SPECIAL
@ UBIDI_REORDER_INVERSE_FOR_NUMBERS_SPECIAL
Inverse Bidi (Visual to Logical) algorithm for the UBIDI_REORDER_NUMBERS_SPECIAL Bidi algorithm.
Definition: ubidi.h:732
UChar32
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
Definition: umachine.h:467
ubidi_isOrderParagraphsLTR
U_CAPI UBool ubidi_isOrderParagraphsLTR(UBiDi *pBiDi)
Is this Bidi object set to allocate level 0 to block separators so that successive paragraphs progres...
ubidi_isInverse
U_CAPI UBool ubidi_isInverse(UBiDi *pBiDi)
Is this Bidi object set to perform the inverse Bidi algorithm?
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:415
UCharDirection
UCharDirection
This specifies the language directional property of a character set.
Definition: uchar.h:972
UBIDI_REORDER_NUMBERS_SPECIAL
@ UBIDI_REORDER_NUMBERS_SPECIAL
Logical to Visual algorithm which handles numbers in a way which mimics the behavior of Windows XP.
Definition: ubidi.h:707
ubidi_writeReordered
U_CAPI int32_t ubidi_writeReordered(UBiDi *pBiDi, UChar *dest, int32_t destSize, uint16_t options, UErrorCode *pErrorCode)
Take a UBiDi object containing the reordering information for a piece of text (one or more paragraphs...
UBIDI_RTL
@ UBIDI_RTL
Right-to-left text.
Definition: ubidi.h:453
ubidi_getVisualIndex
U_CAPI int32_t ubidi_getVisualIndex(UBiDi *pBiDi, int32_t logicalIndex, UErrorCode *pErrorCode)
Get the visual position from a logical text position.
UBIDI_OPTION_STREAMING
@ UBIDI_OPTION_STREAMING
option bit for ubidi_setReorderingOptions: process the output as part of a stream to be continued
Definition: ubidi.h:1033
U_CDECL_END
#define U_CDECL_END
Definition: umachine.h:86
U_CDECL_BEGIN
#define U_CDECL_BEGIN
Definition: umachine.h:85
ubidi_getLevelAt
U_CAPI UBiDiLevel ubidi_getLevelAt(const UBiDi *pBiDi, int32_t charIndex)
Get the level for one character.
ubidi_getParaLevel
U_CAPI UBiDiLevel ubidi_getParaLevel(const UBiDi *pBiDi)
Get the paragraph level of the text.
UBIDI_LTR
@ UBIDI_LTR
Left-to-right text.
Definition: ubidi.h:441
ubidi_countParagraphs
U_CAPI int32_t ubidi_countParagraphs(UBiDi *pBiDi)
Get the number of paragraphs.
ubidi_getVisualRun
U_CAPI UBiDiDirection ubidi_getVisualRun(UBiDi *pBiDi, int32_t runIndex, int32_t *pLogicalStart, int32_t *pLength)
Get one run's logical start, length, and directionality, which can be 0 for LTR or 1 for RTL.
U_DEFINE_LOCAL_OPEN_POINTER
#define U_DEFINE_LOCAL_OPEN_POINTER(LocalPointerClassName, Type, closeFunction)
Definition: localpointer.h:550
UBiDi
struct UBiDi UBiDi
Definition: ubidi.h:486
ubidi_getProcessedLength
U_CAPI int32_t ubidi_getProcessedLength(const UBiDi *pBiDi)
Get the length of the source text processed by the last call to ubidi_setPara().
UBIDI_REORDER_DEFAULT
@ UBIDI_REORDER_DEFAULT
Regular Logical to Visual Bidi algorithm according to Unicode.
Definition: ubidi.h:703
UBiDiDirection
UBiDiDirection
UBiDiDirection values indicate the text direction.
Definition: ubidi.h:429
ubidi_setPara
U_CAPI void ubidi_setPara(UBiDi *pBiDi, const UChar *text, int32_t length, UBiDiLevel paraLevel, UBiDiLevel *embeddingLevels, UErrorCode *pErrorCode)
Perform the Unicode Bidi algorithm.
ubidi_getText
const U_CAPI UChar * ubidi_getText(const UBiDi *pBiDi)
Get the pointer to the text.
LocalUBiDiPointer
UBiDiClassCallback
UCharDirection UBiDiClassCallback(const void *context, UChar32 c)
Callback type declaration for overriding default Bidi class values with custom ones.
Definition: ubidi.h:2016
ubidi_close
U_CAPI void ubidi_close(UBiDi *pBiDi)
ubidi_close() must be called to free the memory associated with a UBiDi object.
localpointer.h
C++ API: "Smart pointers" for use with and in ICU4C C++ code.
ubidi_getLogicalRun
U_CAPI void ubidi_getLogicalRun(const UBiDi *pBiDi, int32_t logicalPosition, int32_t *pLogicalLimit, UBiDiLevel *pLevel)
Get a logical run.
ubidi_getCustomizedClass
U_CAPI UCharDirection ubidi_getCustomizedClass(UBiDi *pBiDi, UChar32 c)
Retrieve the Bidi class for a given code point.
UBIDI_REORDER_INVERSE_LIKE_DIRECT
@ UBIDI_REORDER_INVERSE_LIKE_DIRECT
Visual to Logical algorithm equivalent to the regular Logical to Visual algorithm.
Definition: ubidi.h:728
ubidi_getBaseDirection
U_CAPI UBiDiDirection ubidi_getBaseDirection(const UChar *text, int32_t length)
Gets the base direction of the text provided according to the Unicode Bidirectional Algorithm.
UBIDI_MIXED
@ UBIDI_MIXED
Mixed-directional text.
Definition: ubidi.h:460
ubidi_openSized
U_CAPI UBiDi * ubidi_openSized(int32_t maxLength, int32_t maxRunCount, UErrorCode *pErrorCode)
Allocate a UBiDi structure with preallocated memory for internal structures.
ubidi_orderParagraphsLTR
U_CAPI void ubidi_orderParagraphsLTR(UBiDi *pBiDi, UBool orderParagraphsLTR)
Specify whether block separators must be allocated level zero, so that successive paragraphs will pro...
ubidi_setContext
U_CAPI void ubidi_setContext(UBiDi *pBiDi, const UChar *prologue, int32_t proLength, const UChar *epilogue, int32_t epiLength, UErrorCode *pErrorCode)
Set the context before a call to ubidi_setPara().
ubidi_getLevels
const U_CAPI UBiDiLevel * ubidi_getLevels(UBiDi *pBiDi, UErrorCode *pErrorCode)
Get an array of levels for each character.
ubidi_invertMap
U_CAPI void ubidi_invertMap(const int32_t *srcMap, int32_t *destMap, int32_t length)
Invert an index map.
uchar.h
C API: Unicode Properties.
ubidi_open
U_CAPI UBiDi * ubidi_open(void)
Allocate a UBiDi structure.
ubidi_setReorderingOptions
U_CAPI void ubidi_setReorderingOptions(UBiDi *pBiDi, uint32_t reorderingOptions)
Specify which of the reordering options should be applied during Bidi transformations.
ubidi_getReorderingOptions
U_CAPI uint32_t ubidi_getReorderingOptions(UBiDi *pBiDi)
What are the reordering options applied to a given Bidi object?
UChar
char16_t UChar
Definition: umachine.h:418
UBIDI_REORDER_COUNT
@ UBIDI_REORDER_COUNT
Number of values for reordering mode.
Definition: ubidi.h:738
UBIDI_REORDER_RUNS_ONLY
@ UBIDI_REORDER_RUNS_ONLY
Reorder runs only to transform a Logical LTR string to the Logical RTL string with the same display,...
Definition: ubidi.h:719
U_CAPI
#define U_CAPI
This is used to declare a function as a public ICU C API.
Definition: umachine.h:110
ubidi_countRuns
U_CAPI int32_t ubidi_countRuns(UBiDi *pBiDi, UErrorCode *pErrorCode)
Get the number of runs.
ubidi_reorderVisual
U_CAPI void ubidi_reorderVisual(const UBiDiLevel *levels, int32_t length, int32_t *indexMap)
This is a convenience function that does not use a UBiDi object.
UBIDI_OPTION_REMOVE_CONTROLS
@ UBIDI_OPTION_REMOVE_CONTROLS
option bit for ubidi_setReorderingOptions: remove Bidi control characters
Definition: ubidi.h:985
ubidi_getResultLength
U_CAPI int32_t ubidi_getResultLength(const UBiDi *pBiDi)
Get the length of the reordered text resulting from the last call to ubidi_setPara().
ubidi_writeReverse
U_CAPI int32_t ubidi_writeReverse(const UChar *src, int32_t srcLength, UChar *dest, int32_t destSize, uint16_t options, UErrorCode *pErrorCode)
Reverse a Right-To-Left run of Unicode text.
ubidi_getLength
U_CAPI int32_t ubidi_getLength(const UBiDi *pBiDi)
Get the length of the text.